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Finding the Fourth Proportional to 401,156.67, 553,657.20 and 256,025.07

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Solution

The fourth proportional to 401,156.67, 553,657.20 and 256,025.07 is: 353,353.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,156.67 : 553,657.20 = 256,025.07 : x
  2. Step 2: Convert to fraction form
    401,156.67/553,657.20 = 256,025.07/x
  3. Step 3: Cross multiply
    401,156.67x = 553,657.20 × 256,025.07
  4. Step 4: Simplify right side
    401,156.67x = 141,750,123,386.00
  5. Step 5: Solve for x
    x = 141,750,123,386.00/401,156.67
  6. Step 6: Final answer
    x = 353,353.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.